How does it work? Is it https://people.csail.mit.edu/mrub/evm/? I see the FAQ about VitalLens, but I couldn't find technical details.
It's super cool. Thanks for sharing. I want to build a biofeedback app for meditation and this looks like a good platform to use.
Please consider checking out comments: https://news.ycombinator.com/item?id=47293662